21004920

素因数分解:

$2^3\times 3^5\times 5^1\times {\mathrm{2161}}^1$

素因数の和:2187

約数の個数: 96

約数和(自身を含む): 70827120

約数和(自身を除く): 49822200

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 243, 270, 324, 360, 405, 486, 540, 648, 810, 972, 1080, 1215, 1620, 1944, 2161, 2430, 3240, 4322, 4860, 6483, 8644, 9720, 10805, 12966, 17288, 19449, 21610, 25932, 32415, 38898, 43220, 51864, 58347, 64830, 77796, 86440, 97245, 116694, 129660, 155592, 175041, 194490, 233388, 259320, 291735, 350082, 388980, 466776, 525123, 583470, 700164, 777960, 875205, 1050246, 1166940, 1400328, 1750410, 2100492, 2333880, 2625615, 3500820, 4200984, 5251230, 7001640, 10502460, 21004920]

約数ペア:

[(1, 21004920), (2, 10502460), (3, 7001640), (4, 5251230), (5, 4200984), (6, 3500820), (8, 2625615), (9, 2333880), (10, 2100492), (12, 1750410), (15, 1400328), (18, 1166940), (20, 1050246), (24, 875205), (27, 777960), (30, 700164), (36, 583470), (40, 525123), (45, 466776), (54, 388980), (60, 350082), (72, 291735), (81, 259320), (90, 233388), (108, 194490), (120, 175041), (135, 155592), (162, 129660), (180, 116694), (216, 97245), (243, 86440), (270, 77796), (324, 64830), (360, 58347), (405, 51864), (486, 43220), (540, 38898), (648, 32415), (810, 25932), (972, 21610), (1080, 19449), (1215, 17288), (1620, 12966), (1944, 10805), (2161, 9720), (2430, 8644), (3240, 6483), (4322, 4860)]